Book excerpt: Efforts to prevent youth crime and violence, to be effective, should be planned and implemented at the local level. This guide makes more accessible the many Federal programs that exist to support community-based efforts to prevent youth crime and violence. It provides planning guidance and describes some of the most promising Federal crime prevention programs, which support the planning and implementation of crime prevention efforts with technical assistance and funding. Sections: what is crime prevention? developing a comprehensive crime prevention strategy; the 50 Federal programs; resource list; selected reading; and understanding Federal jargon.